<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE  >
<html >
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=0,viewport-fit=cover">
    <title>工程师二维码</title>
</head>
<body>
<div style="text-align: center;margin-top:30%">
    <IMG src="data:image/png;base64,${qrPng}"/>
</div>
</body>
</html>
